1: (0 1 15)

(0)(1 19 15 20 6)(2 18 4)(3 21 17 7 5)(8 16 14 12 9)(10 13 11)

2: (6 15 20)

(0)(1 19 15)(2 18 4)(3 21 17 7 5)(6)(8 16 14 12 9)(10 13 11)(20)

3: (5 17 7)

(0)(1 19 15)(2 18 4)(3 21 17)(5)(6)(7)(8 16 14 12 9)(10 13 11)(20)

4: (1 19 15)

(0)(1)(2 18 4)(3 21 17)(5)(6)(7)(8 16 14 12 9)(10 13 11)(15)(19)(20)